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Author Topic: Wide or Narrow????  (Read 3566 times)
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nor66
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« on: December 10, 2013, 07:26:35 PM »

Lets hear it!

Do you run wide front and rear wheels and tires?  If so, could you explain why?

Do you run Narrower front and rear wheels and tires? If so, could you explain why?

I have heard or read a lot of different opinions and was interested in what ya'll had to input.

I am looking more for information related to handling of your mowchine.
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« Reply #1 on: December 10, 2013, 07:56:12 PM »

Well I run 11x7.0x6 tires on a 8.25 rim up front I like spreading them out gives a firmer feel in the front end. I run 12x9x6 tires on 9" rims in the back I like the feel of the tire gives a little  and provides a bit more bit and I can run lower pressures. I know I had some loose issues at the AAMC but I found that problem it wasnt chassis, it was the tires. That will be changed very soon. But ya never know unless you dont try something... Want to know more call me sometime LOL.
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« Reply #2 on: December 10, 2013, 08:01:35 PM »

Ron    Prepared Chassis or FXT/S   ?   
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« Reply #2 on: December 10, 2013, 08:01:35 PM »

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nor66
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« Reply #3 on: December 10, 2013, 08:11:11 PM »

 
Ron    Prepared Chassis or FXT/S   ?   

I will be running a FXS
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« Reply #4 on: December 11, 2013, 12:24:14 AM »

On mt prepared chassis I prefer a narrower tire on the front and on my supermod style wider fronts. On a prepared chassis I don't feel the need for the extra traction the wider tire gives you but on the wider chassis there is more need for right front grip.

Lester
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« Reply #5 on: December 11, 2013, 07:36:32 AM »

Why  do you think the super mods need more right front grip vs the prepared chassis? 


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« Reply #6 on: December 11, 2013, 09:54:01 AM »

Entering the corners harder n faster than the prepared and come off harder
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« Reply #7 on: December 11, 2013, 06:35:02 PM »

I understand the supermods  are carrying more speed on entry and on the exit of the corner but how or why is a wider tire and wheel more advantageous than the narrower wheel & tire combination.

I guess I am trying to understand the theory behind the use of wide or narrow wheel & tire combinations.😉


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« Reply #8 on: December 11, 2013, 07:53:28 PM »

Look at every dirt go cart out there. Wide right, skinny left. The prepared chassis have more roll, this plants the right front better.
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« Reply #9 on: December 12, 2013, 12:08:33 AM »

Here's another way to look at it: side bite (roll over bite). Due to the narrower stance of a prepared chassis it will want to "ro;; over" easier than a wider stance. once it reaches that point there is no more "left turn" to go. Less pressure on the right front than the wider stance which can accommodate more roll over resistance hence the need for the wider tire. Plus the narrower tire in essence can give you a wider stance. How? well the distance between the insides of narrower tires is wider when the outside is limited to 38". This can come in effect on a rougher track as it will miss a few more bumps and ruts. Now if the ARMA prepared chassis go to 40" It will be an easy fix on mine as I'll go to the wider tires on the front.

Lester
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« Reply #10 on: December 12, 2013, 05:40:56 AM »

Ok so if I understand what your saying the wider stance will not push as hard on the right front so you need more of a contact patch to help with front grip at turn in? 
 So is it safe to say that this is same on the rear but more for grip thru the middle and exit of the turn?


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« Reply #11 on: December 12, 2013, 12:11:11 PM »

Ok so if I understand what your saying the wider stance will not push as hard on the right front so you need more of a contact patch to help with front grip at turn in? 
 So is it safe to say that this is same on the rear but more for grip thru the middle and exit of the turn?


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Just the opposite. A narrow tire on the right front of a wider stance will lose grip with the track due to increased pressure (push) and a wider tire with more contact with the ground will allow more pressure without losing its grip. There is less of a chance of destroying (wearing out) a narrow right front on a 38" chassis as there is a wider stance on a wider tire.

Lester
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« Reply #12 on: December 12, 2013, 01:43:26 PM »

There are many variables in these changes. Every chassis and driving styles are different such as cross weight, side weight, nose weight, caster,  camber,  lead,  tire pressures and widths,  To answer your question the right front will probally have more pressure and when you turn left depending on caster it will apply more pressure and sometimes that can make you tight. That why you need a test and tune day at the track
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« Reply #13 on: December 12, 2013, 08:22:17 PM »

I have been researching the whys and why nots on different tire and wheel combinations  and  I know lawn mowers have to run the same size wheel and tire on each axle  while the wider right front would be better, I wonder if the wider left front tire would be hindering  the weight transfer on turn in


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« Reply #14 on: December 13, 2013, 09:27:11 AM »

It doesn't hinder as much as it's unnecessary in the prepared chassis IMHO. Many people do use wider tires on their prepared chassis. You asked for opinions and we gave them. Now you need to make your own decision based on what you were told and if you disagree go your own route.

Lester
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